JF Ptak Sciecne Books Quick Post
Patent #190303723 issued in Great Britain to R.H. Payne and T. Broadbent, February 17, 1903. It really doesn't have anything to do with creating patina/lustre in the tone of a new violin via artificial means, but it does have that scent to it, and sometimes that all anything needs to do, provide the aroma of an interesting idea.
Abstract of GB 190303723 (A)
"In an instrument for reproducing sound, a resonating-chamber is used instead of a diaphragm and a trumpet. In the construction shown, the resonating-chamber consists of a violin body C mounted on an arm D extending from the instrument A. Fig. 2 shows means which may be employed for the mounting. The pin E passes through a hole in the neck C', which is clamped by the nut E'. The pin E is mounted in the wooden block F journalled in the fork H on the swivelling-pin. Washers G, G<1> prevent the communication of vibrations to the arm D. The hole in the neck may be dispensed with, a screw or spring clamp being employed in place of the pin E. The reproducer K, Fig. 3, is cemented to the violin belly. The style K<1> is clamped in it by the screw K<2>. The violin has the usual sound post and f-holes in the belly and also holes C<2> in the back. Strings may be stretched across the resonator. When a violin body is used, the strings are stretched by the usual pegs in the neck."